Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c920f0436ecc3f…

MALICIOUS

PDF

69.1 KB Created: 2021-05-29 16:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 190fb5c2d35533c19cda6a3dea00e067 SHA-1: dab69402b9a7bc62338b85caffa5ecf40e6da58c SHA-256: e5c920f0436ecc3f5014777ebe041295f2c14c04c68d3dfcde70798e0b9cff32
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URLs suggest a phishing or malware distribution scheme, masquerading as a search result for a specific PDF download. The document body is heavily obfuscated, preventing a detailed analysis of its specific payload or further actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/n7ba820vteu5b3g8m2fg3i23t5/17139848302.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16081700b8cfa8---femifokafuj.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093316b281f6---82953635165.pdf
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607b56d89dd88---zikosapavusom.pdf
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a69d051cb1---72061689571.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/e202a0308f8e3407c02c40a1e1e99d1f/88813589843.pdf
    • https://atamergranit.com/userfiles/file/titulibexefowiv.pdf
    • https://an-professional.ru/img/files/file/fixigovidejup.pdf
    • http://vinmexindia.com/uploads/momaxapefan.pdf
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f033d1938---83660147031.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071b645eb2ec---zavorofisuzulu.pdf
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083167b8dd7c---vefazuwugegogudemanofitiw.pdf
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/paof4gpgboi1n67tb9oiiepel1/8624842140.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bc8636ceb8---ruvoxotidun.pdf
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6534bfe36---zakit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=pocket+surgery+2nd+edition+pdf+download
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfbb.bin
71723c73f986b7a7a2c6832e2b3a836efbc4749f5fb96c6fe735034ef0e85046
pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBB 5712 bytes
font_01_sfnt_off0000e363.bin
13435cb90274a4e8c7a6f8159e1e6231fdf9cdea574db5434234a2a67013cb03
pdf-font-stream PDF embedded font (sfnt) at offset 0xE363 10620 bytes